Emergency brake



Maich 23,1924. 1,433,333

l A D. E. FORCE ET AL EMERGENCY BRAKE Filed Dec." 1o. 1921 'Anale/ausm Patented Mams, 1924.-

UNITED STATI-:s` PATIENT oFF-lcs.

DAVID E FORCE, F JERSEY CITY, NEW JERSEY, AND MICHAEL F.' QUINTE, F BUB- BANK, cALIFonNu.

nummer BRAKE.

Application tiled December 10, 1921. SerialNo. 521,442.

To all fwwm it may concern:

Be it known that we, DAVID E. FORCE,

a citizen of the United States, and a resident of Jersey City, in the county of Hudson and State of New Jersey, and MICHAEL F.

QUINTE, a subject of the King of Italy, and

a resident of Burbank, in the count of Los An eles and vState of California, ave

invente a new and'Improved Emergency Brake, of which the following is a full,clear,

and exact description.

Thisl invention relates to improvements in emergency brakes for vehicles, an object of the invention being to provide a device of this character which can be operated independently of the ordinary service brake.

A further object is to provide an emergency brake equipped with a plurality of road engaging members which may be used as a non-skid devicevas well as a brake, which may be used to dig a vehicle out of mud holes, and which will permit a vehicle to be operated upon a deflated tire without injuring the tire. l A further object is to provide an emergency brake which will be practical in construction, durable and eiicient in use, and which will not interfere with the changing of tires on a vehicle.

With these and other objects in View the invention consists in certain novel features of construction, and combination' and arrangements of parts', as will be more fully hereinafter described and pointed out in :5 the claims. 1`

In the accompanying drawings- Figure 1 is a fragments. view in side elevation of a wheel with my improved emergency brake applied thereto, parts being 0 broken away for/clearness.

Fig. 2 is a view in transverse section onA the line 2--2 of Fig. 1`.

Fig. 3 is an -inside view of the brake drums and their controlling mechanisms.

Figs. 4 and v5 are fragmentary detail views illustrating-a slight modification. Fig. 6 is a broken fragmentary detail view of the emergency brake rocking and releasing mechanism.

Referring in" detail to the drawings, 1

. represents a solid wheel'mounted upon an axle 2; a conventional tire rim 3 supported upon the wheel -felly 4 retains a pneumatic tire 5 in place. A brake drum 6 secured to the inside ofthe wheel 1 contains a brake band 7 and a conventional operating mechanism such as the spreader 8 and lever 9 for moving the brake -band into operative position' against the drum.

A disk 10 is held in position against the outer face of the wheel by anl annular channel strip 11 receiving the outer edge ofthe disk andan annular flan e 12 on an eX- tension 13 of the wheel hu which receives the inner edge'of the disk. An auxiliary brake drum 14 for my improved emergency brake is made integral with an outwardly extending flange 15 secured to the inner `face of the wheel 1 and retained in place by an annular guide strip 16. A fiat coiled spring 17 is wound around the inner brake drum 6 and is operatively connected to the inside of the outer brake drum 14.

The disk 10 and the ange 15 are conl nected at diametrically opposed points by pins 18 which are movable in arcuate slots 19 in the wheel 1 to permit limited rotary movement of the disk 10 and the brake drum 14. A brake band 20 around the drum 14 ventional manner.

A flat metal ring 22 is secured to 'theV outside of the wheel felly l4 by relatively long bolts 23. Spacing sleeves 23 around the bolts maintain the ring 22 in spaced relationship 'to the felly. The spacing sleeves 23 also serve tohold the wheel rim 3 in position. pivoted at their inner ends to the'disk 10, the pivoted ends of the levers bein ranged in an annular series aroun disk. The levers 24 are normally disposed in tangential relationship'to the wheelhub and are pivotally connected at their outer ends to links 25 projecting through the wheel 1 adjacent the felly and having slot and pin connections such as 27 with brackets secured in an lannular series tothe inside of the wheel. The links 25 are in turn pivot- Telescoping levers 24 are i arthe 4' ally secured adjacent their point of connection to the levers 24 to ground engaging spurs in thle form of lplates 281. These plates are slidable radially in grooves 29 on the inner face of the ring 22 and are slotted as indicated 30 to accommodate the spacing sleeves 23'.

A lpivoted latch 31 is'tgnounted on the flange and is engageable in a pocket in the wheel 1 to lock the flange 15 against rotation. A roller 32 carried by the latch 31 extends inwardly from the flange. A cam member 33 is mounted upon the end of a link 34, the link itself being pivotally mount ed upon-a bracket 35' secured to the axle housing 36. The link 34 may be operated by a pivoted lever 37 to move the cam member 33 into engagement with the roller 32, tripping the latch 31 and releasing the brake drum 14 andthe disk 10.'

The operation of the device is as follows: lt will readily be seen -that the ordinary service brake associated with the brake drum 6 may be applied without e'ecting in any way the emergency brake. When, however, it becomes necessary to apply the emergency brake, tightening of the brake band 20 will cause the drum 14 and disk 10 to rotate until they are stopped by the engagement of the pins 18 in the ends of the slots 19. As the disk 1() rotates the levers 24 are moved to radial osition, operating through the medium of the links 25 to propel the spurs 28 radially and into engagement with the road. The latch 31 drops into the opening in the ange 15 holding the levers 24 and spurs 28 in extended position. When it is desired to release the spurs a cable 39 attached to the lever 37 may be operated to move thecam 33 into contact with the roller 32, tripping the latch 31 and allowing the spring 17 to restore the various parts ofthe emergency brake to their normal position. The telescoping levers 24 may, if desired, l be wrapped with coiled springs 40 to cushion the action of the emergency brake. If for any reason it becomes necessary to remove the tire and tire rim, the nuts are removed from bolts 23 and the spacing sleeves 23 taken off the bolts so as to release the tire. The spurs 28 are then rotated inward thus making it possible to draw the'tre and tire rim from the wheel 4. v

In Figs. 4 and 5 ll have illustrated a slight` modification wherein a different form of connecting means is employed between the brake drum 14 and the disk 10. instead of using the pinsl 18 and slots 19 we provide ashaft 41 journaled in the wheel 1. Pinions 42 are mounted on' the shaft at opposite sides of the wheel. A flange 43 corresponding to the flange 15 is formed -with gear teeth around its edge meshing with one of4 the pinions and the disk 10 may also be provided with gear teeth 44 meshing with the incassa other pinion so that movement of the flange 43 causes movement of the disk 10. The

operation of the device is exactly the same Although we have illustrated certain of l the preferred embodiments of the invention changes might be made in the general yform and arrangement of the parts described without departin from the invention, and hence we do not cise details set forth but consider ourselves at liberty lto make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

1. The combination with a'vehicle wheel and a service brake including a drum and operating means within the dr'um, of an auxiliar brake drum located around the drum o the service brake and having limited rotary movement on the wheel, radially movable road engaging members, means whereby rotation ofthe auxiliary brake mit ourselves to the preit will be understood that various' slight drum moves said members to road engaging position and locks them in said position,

rrav

of a brake drum having limited rotary mounting on the wheel, a disk on the opposite side of the wheel coupled for simultaneous movement with the drum, cushioned levers pivoted on the disk, radially movable road engaging members, means guiding lthe radial movement and permitting lateral movement of said members, pivoted links associated with the wheel felly operatively connecting the levers and road engaging members, said levers normally disposed in tangential relationship to the wheel hub whereby rotation of the disk moves said levers to radial osition and projects the road engaging mem rs radially.

3. The combination with a wheel and a movable brake drum therefor; of a lurality of road engaging members mova le radially with respect to said wheel, a latch for locking said members'in operative position, means lactuated by the movement of said drum for operating said latch, and means for tripping said latch to permit of restoration of said road engaging members to inoperative position.

4. The combination with a wheel and a 1,4ee,sse j Q movable brake drum therefor having a said 4flange to retain saidI road engaging flange; of a plurality of road engaging members in .operative position2 and means members movable radially with respect to for trippinsaid latch to permlt of restora- 10 A sar said Wheel, means actuated'by movement I.of tion o road engaging members to in- A 5 said drum for moving said road engaging operativev position.

, members to operative position, a latch ac- DAVID EQFORCE. v

tuated. by' the last named means to engage v MICHAEL- F.' QUINTE. 

